ASTROSAT CZTI

Data Quality Report

Orbit 51289

Creation date: 2025-03-23T00:06:13.351642
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C07_001T01_9000006454_51289cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51289cztM0_level2_quad_clean.evt
Size (bytes)746,619,84088,626,240
Size712.0 MB 84.5 MB
Events in quadrant A6,417,753616,868
Events in quadrant B4,697,987677,985
Events in quadrant C9,794,085406,242
Events in quadrant D6,218,212522,115

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237882
B0184034
C03364928
D0231605

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65922543.853155%
B65912293.474435%
C6588248037.644202%
D659080312.185129%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7622 6593 117 117 1.54% 1.77%
B 7622 6593 145 145 1.90% 2.20%
C 7621 6592 2395 2395 31.43% 36.33%
D 7621 6592 691 691 9.07% 10.48%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 3 2308119 13161.63 699 680 175.3
A 9 191 316974 1804.14 699 680 175.3
A 12 194 269626 1534.07 699 680 175.3
B 10 254 603002 4020.06 702 678 149.8
B 5 185 377224 2513.16 702 678 149.8
B 4 170 270389 1800.12 702 678 149.8
C 4 12 6560840 42445.98 566 563 154.6
C 10 171 572578 3701.02 566 563 154.6
C 13 3 143422 924.32 566 563 154.6
D 12 2 1020725 5605.59 652 628 182.0
D 2 216 919792 5050.95 652 628 182.0
D 8 176 444594 2439.66 652 628 182.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter